Clean Water Act discharge permit · NPDES IA0056821
DESOTO CITY OF STP, De Soto, IA: NPDES IA0056821 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 9Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
DESOTO CITY OF STP, held by CITY OF DESOTO, holds NPDES permit IA0056821. EPA’s file records it issued April 1, 2020 and expiring March 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | DESOTO CITY OF STP |
|---|---|
| Permittee as filed | CITY OF DESOTO |
| NPDES ID | IA0056821 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 1, 2020 |
| Expiration date | March 31, 2025 |
| Issuing agency | STA |
| Address | De Soto, IA 50069 |
| Subwatershed | Bulger Creek (HUC 071000070903) |
| NAICS | 221320 – Sewage Treatment Facilities |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 11Pollutants on file
- 9Under a numeric limit
- 9With a violation of any kind
- 9With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| pH | 5 | 70 | 64 | December 31, 2022 | |
| Flow, in conduit or thru treatment plant | 0 | 40 | 40 | June 30, 2011 | 137% over the limit |
| Nitrogen, ammonia total [as N] | 48 | 42 | 30 | January 31, 2026 | 53,332% over the limit |
| Solids, total suspended | 9 | 28 | 12 | February 29, 2024 | 3,695% over the limit |
| Oxygen, dissolved [DO] | 1 | 9 | 5 | September 30, 2020 | 43% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 4 | 12 | 4 | June 30, 2017 | 15% over the limit |
| Coliform, fecal general | 0 | 3 | 3 | July 31, 2010 | 1,371% over the limit |
| Nitrogen, Kjeldahl, total [as N] | 2 | 8 | 2 | February 29, 2024 | 19,676% over the limit |
| E. coli | 1 | 2 | 1 | June 30, 2015 | 106% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 0 | 0 | ||
| Chloride [as Cl] | 5 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES IA0056821.
Inspections
EPA’s inspection file holds no inspection for NPDES IA0056821.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES IA0056821.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IA0056821.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID IA0056821 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.